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Finding the Fourth Proportional to 10,000.72, 14,998.77 and 2,980.09

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Solution

The fourth proportional to 10,000.72, 14,998.77 and 2,980.09 is: 4,469.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,000.72 : 14,998.77 = 2,980.09 : x
  2. Step 2: Convert to fraction form
    10,000.72/14,998.77 = 2,980.09/x
  3. Step 3: Cross multiply
    10,000.72x = 14,998.77 × 2,980.09
  4. Step 4: Simplify right side
    10,000.72x = 44,697,684.49
  5. Step 5: Solve for x
    x = 44,697,684.49/10,000.72
  6. Step 6: Final answer
    x = 4,469.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.